HISTORICAL GEOLOGY, Sixth Edition, presents a balanced overview of the geological and biological history of Earth as a continuum of inter-related events that reflect the underlying principles and processes that have shaped our planet. Readers are taught the basic geologic principles as well as how scientists apply these principles to unravel Earth's history. Three major themes – time, evolutionary theory, and plate tectonics – are woven together throughout the book to help readers link essential material and enhance their understanding of historical geology.